Combined vacuum-tube attachment and air-inlet device for gas engines



Dec. l, 1925. ld-

. s. F.. MRE

COMBINED VACUUM TUBE ATTACHMENT AND AIR INLET DEVICE FOR GAS ENGINES Filed March '7. 1925 2 Sheetsmsheet l gv www4?,

A TTORNE Y.

Dec. l 1925. 1,564,076

B. F. LARE COMBINED VACUUI\'TUBE ATTACHMENT AND AIR INLET DEVICE FORGAS ENGINES Filed March '7. 1925 2 Sheets-Sheet 2 A TTORNE Y.

Patented Dec. 1, 1925.

UNITED STATES PATENT QFFICE.

BENJAMIN F. LARE, OF PHILADELPHIA, PENNSYLVANIA; MATILDA A. LARE EXECU- TRIX 0F SAID BENJAMIN F. LARE, D ECEASED.

COMBINED VACUUM-TUBE ATTAGHMENT AND .AIB-INLET DEVICE FOR GAS ENGINES.

Application filed March 7, 1925. Serial No. 13,781.

To all whom t may concern:

Be it known that I, BENJAMIN F. LAKE, a citizen of the United States, and a resident of Philadelphia, in the count-y of Philadelphia and State of Pennsylvania, have invented an Improvement in Combined Vacuum-Tube Attachments and Air-Inlet Devices for Gas Engines, of which the following is a specification.

My invention relates to devices, sometimes called vaporizers, which are adapted to be connected to a vacuum tube leading from a vacuum tank to the inlet manifold of a gas engine and which devices are also adapted to have connection directly with such manifold for the purpose of introducing or permitting' the introduction of air either into the said vacuum tube or directly into the said manifold. The present invention relates to a device of the characterindicated, but which is of a construction such that it provides means not only for the introduction of air either directly into the manifold or-into the Vacuum tube, but also provides means whereby the connection of the latter to the inlet manifold may be facilitated under the varying conditions under which connection must be made to the manifolds of structures having different or differing mechanical characteristics.

In some cases the relation of the manifold to other parts of the gas engine structure is such that connection of the vacuum tube and air inlet device thereto is more or less diflicult and the general object of the present invention is to provide an attachment of a character such that it may be adapted to the different conditions met with in practice for the purpose of facilitating its connection with a manifold at a point desired, or perhaps, at the only point which may be available for connection.

It is also an object of the invention to provide an attachment of the character indicated comprising what may be regarded as an intermediate member through the medium of which the air inlet devicev and an end of the vacuum tube may be connected with the inlet manifold of a gas engine.

Another object of the invention is to provide an attachment comprising a member, f

one end of which is adapted to be fastened in an opening leading to the interior of an inlet manifold and to the opposite end of which either ,air inlet device or Ian end of the vacuum tube may be connected, and the side of which is provided with an opening within which either the air inlet device or an end of the vacuum tube may be connected, whereby adaptation of the said attachment to different conditions met with in practice is facilitated and made possible.

A further objectV of the invention is to provide means whereby air may be pre heated before it is introduced into the inlet manifold through the said air inlet device.

To these and other ends the invention comprehends the construction and arrangement of parts hereinafter described in detail and particularly pointed out in the claims and as illustrated in the accompanying drawings, in which I have illustrated a convenient form of mechanical embodiment of the said invention- Y In order that an understanding of the invention may be had more readily reference should be made to the accompanying drawings in which:

Fig. l is a view in longitudinal section of an attachment embodying the invention;

Fig. 2 is a similar view in! which the parts or the attachment have been rearranged and differently connected together;

Fig. 3 is a view in perspective showing a vacuum tank and a portion of a gas engine casing to which is attached a portion of an inlet manifold, and also showing the vacuum tube connection between the said vacuum tank and the gas inlet passageway leading to the said engine, and showing also the attachment embodying my invention and the manner in which it is connected with the said manifold and with the said vacuum tube;

Fig. 4 is a View in perspective showing a portion of a gas engine casing and the inlet manifold and one manner of connecting the said attachment thereto, the said attachment being in reversed position with respect to the position shown in Fig. 3;

Fig. 5 -is a view in perspective of a gas inlet manifold showing the manner in which my attachment is employed in connection therewith;

Fig. 6 is a View showing in elevation a portion of a gas engine casing or cylinder and an inlet manifold having connection therewith and also showing the said attachment and means in section tor preheating through the vsaid iplug. the vac'uiunftube dus provided with 'a eouthe air before introducing `-the same through the said attaclnn'ent into the said nianiliold; and l i Fig. 7 is a sectional view taken on the line y747 of Fig. 6.

Referring to the drawings: 1 designates broadlyv a portion of the cylinder or casing of a gas engine for autoniebiles and 2 designates as a Wholea gas-inlet manifold for supplying gas to the combustion chamberslinsaid engine. The vacuuni tank previeusly-:referred to is ot any linou'n construction, as is' shown at 3 in Fig. B. rThe vacuum tube el -is 'connected atl'itsouter end Vto 'the topiportiou of :the said vacuum tank land its inner end is:connected-through the medium `rofthe fattaehmentconstituting er einbohyilng my invention either directly with somerpart -o the mani/fold 12, as sho-Wn `in i1, 5 andl, or withsomeother parto't 'the engineistrueture, 'asshewn in rhe structure of the attachment is identical ilrthe several igui'esshewn', theonlj; (litter- "enceibeilngin the Way lin which parts thereof are assembledfand in' chiel theaconnections are made betrfeen `the ma older a portion of thegasengin'e cylinder and the vacuum Atube 4.

i The attac-linien# coinprises a short tubular plug 5, one endl y'-ot which is .exteriorljyY threaded,asindie-ated at G, 'While the other end 'thereetfis'lilnterierly rthreaded, as ii lieatedfat'f?. The said plugis provided "u i an opening 10 in its side `which isV screw threaded, asfshciwn. Another part et the yattaeh'inentcon 'Vtsot "a v veidevieecom- 'p'rising ithe ftubulai valre helding" section l11, one endfof ii' eed land screw threaded, as ine-icatechfat mivhich end is adapted =t1of`en22`gefeither "'thefintern'al serew 'threa'dsfat 7 in ene'en'd ofthe plug 51er j 'screwf threads fof the opening L10 inth-e sid ot" saidfd'evice. f Thefouter portion-'fof the interior fof *the tubular member "e'rfseetion 11 v"te emerged analisi sreewfthreaded ffor .the receptin fof anfadj ust-able Vplug 13, 'provided with an epening -ltfezttending longitudinally thereof. Situated' 'Within fthe enlarged -portifo'n 'of theiint'e'rior o'-"the tubular lsection .'11 is a coiled spring 15, the inner end ot which 'rests lu'pon shoulder 16 atfthe'lowerend ot' the enlarged Iportion "of the interior rotfsaid s'p'ring -b'ears against' a' ball 'valve 17 and the inner end of the adjustable vplug 'ldto `n'orr'nal'lyfelosefthe'-openinger passageway The inner end foi pling member comprising a sCreWthr-eaded 'nipple'porti'entwhich 'latter-is `adapted to engage ivitl-i-the serfe'v *threads at T or 10,

Ato Whie'h reference lhas already 6"been made.

In'Fi'g'.l 1- of the-"drawings,f'thetubula'r valve 5Section#11 is connected to the screw threaded outer'end ofthe-plug 5,-\vh\ile the screv;7 threaded nipple 2O felt' thev vacuum tube coupling is connected in the opening l0. ln Fig. 2, a reversed connection of the kpiu-ts is made. In Figs. 3 and I5, the connection o'j 'the parts 5, 11 and Q0 ot' the attachment are made in the same manner asin Fig. 2, while in Figs. 1 and 6, the connection ofthe said parts is made asin Fig. 1.

1t Will be noted that the nipple 2O of the coupling of the vacuum tube l isin engagementk Wit-h the opening l0 inthe side of the plug 5, `while the tubular valve holding section :1l is in engagement with the screuv threaded interior. portion oi the outer end f fotsaidplug;and that in Figs. Q, 3 and 5 the tubularafalve'holding section 1l is connected .iirtheopening 10 in the side ofthe plugf, while the nipple 2O ofthe vacuum tube coupling is lconnected in the sere-W 4threaded enter endet -thefsaid plug 7.

The above connections oi these parts in the severalhp ures are/shown for the pur- .pcse yot' vindicating the manner in which the assembling of the parts may be made so as to adapt the attachment` to vdifferent conditions as inet with in actual practice.

Generally, the air 'which is delivered 4throughthe valve controlled 'passageway to thefvalve holding deviceis obtainedy `from 'the immediatelysurrounding atn'iosphere, but it preferredythe air which is taken-in through the-said valve controlled :passageway mau be preheated. In Fig. 6 l have sho-Wn construction comprising a tubular cenduin 'one endfof` which connected With theouter end of the ladjustable .plug 13, :While the opposite endfthereoit has connectionf with? the device 21 vand is incommuni-cL tion Withthe :interiorthereoflfhe saidclevice lis df fcrescentfshape and is provided Vwith anges,=zas indieatednat 22;,'the inner fedges :of yWhich* are .adapted tov :bef tted against the outersuriace-wof the 'exhaust unanifold 23.of a gas'engine. .The dit be- --tween the linner 1edgesroffthe :said flanges and the outersurace-rof lsaid tube is'not -so elosef-.or'tight )but that zair 1na`y..pass belfthe "said linner edges -a'nd 'the fsurface ofi the tubewintof the ncrescent `shaped Schan be'r'of the "device 2l. 'The said kdevice 21 'is provided :at its oppositeendswvith -lugs vor fears '211- having openings therethrough, Athrough#whichthe oppositef'ends of a bar lor rod'125 :are 'adapted' to project. The'said opposite 'ends are fscreiv tl-nleadedy and are v adapted to-be elngagedbyY nutsf26, the tightiening-of which clamps fand binds the crescentfshaped lair preheat-ing ydevice onto the exhaust `unaniold 23. l

'It Will befseenthat -byfiny'invention I lurveiprouidedfan attachment of universal character; 1t-hat. is to say,A an attachment., the parts ofWhich/may be connected together in different Ways orarrangements in` order CII that the said attachment may be adapted to meet varying conditions which may be met in actual practice.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

l. A combined vacuum tube attachment and air inlet device `for gas engines comprising a tubular plug, one end of which is adapted to be secured in an opening leading to the interior of a gas engine, the opposite end of which plug is open and which is provided with an opening in its side, an air inlet device adapted to be secured in either of said openings, and a coupling for a vacuum tube having a nipple which is adapted to be secured in either of said openings.

2. A combined vacuum tube attachment and air inlet device for gas engines comprising, in combination, a tubular plug, one end of which is adapted to be connected with the interior of agas inlet manifold, and the other end of which tubular plug is open and which plug is provided with a lateral opening, a tubular valve holding section which is adapted to be connected with the open outer end of said tubular plug or with the said lateral opening, and a vacuum tube coupling which is adapted to be connected either with the open outer end of said tubular plug or with the said lateral opening.

3. A combined vacuum tube attachment and air inlet device for gas engines comprising a tubular plug, one end of which is adapted to be connected with a gas inlet manifold to communicate with the interior thereof, the opposite end of which is provided with screw threads, which plug is provided with a lateral opening, a valve holding tubular section, one end of which is screw threaded and adapted tobeconnected with the open outer end of said plug or with the said lateral opening, a valve mounted in the said valve holding section for closing the opening therethrough, yielding means for yieldingly holding the said valve against a seat, means for varying the tension of said yielding means, and a vacuum tube coupling having a nipple which is adapted to be connected either with the outer open end of said plug or with the said lateral opening.

it. In combination, a tubular plug, one end of which is screw threaded and adapted to engage a screw threaded opening leading into a gas inlet manifold, and the open opposite end of which plug is interiorly screw threaded, and the said plug being provided with a screw threaded opening in its side, a tubulai` valve holding section, one end of which is reduced and screw threaded, the

said reduced screw threaded end portion being adapted to engage either the screw threaded interior oit the outer end of said plug or the said screw threaded opening in the side of said plug, a valve mounted in said tubular section for closing the passageway therethrough, yielding means for yieldingly holding the said valve against a seat, means for varying the tension of said yielding means, a vacuum tube, and a coupling l'iaving connection with one end of said vacuum tube, which coupling is provided with a screw threaded nipple which is adapted to engage either the outer screw threaded end of said plug or the said screw threaded opening in the side thereof.

In testimony that I claim the 'foregoing as my invention, I have hereunto signed my name this 5th day of March, A. D., 1925.

BENJAMIN F. LARE. 

